lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mac80211: split PS buffers into ACs

Browse Source 
For uAPSD support we'll need to have per-AC PS
buffers. As this is a major undertaking, split
the buffers before really adding support for
uAPSD. This already makes some reference to the
uapsd_queues variable, but for now that will
never be non-zero.

Since book-keeping is complicated, also change
the logic for keeping a maximum of frames only
and allow 64 frames per AC (up from 128 for a
station).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2011-09-29 16:04:29 +02:00
committed by John W. Linville
parent 6075039712
commit 948d887dec
6 changed files with 214 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
net/mac80211/status.c
View File

@ -14,6 +14,7 @@
#include "rate.h"
#include "mesh.h"
#include "led.h"
#include "wme.h"
void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
@ -43,6 +44,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (void *)skb->data;
int ac;
/*
* This skb 'survived' a round-trip through the driver, and
@ -62,6 +65,14 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
sta->tx_filtered_count++;
if (ieee80211_is_data_qos(hdr->frame_control)) {
int tid = *ieee80211_get_qos_ctl(hdr) &
IEEE80211_QOS_CTL_TID_MASK;
ac = ieee802_1d_to_ac[tid & 7];
} else {
ac = IEEE80211_AC_BE;
}
/*
* Clear the TX filter mask for this STA when sending the next
* packet. If the STA went to power save mode, this will happen
@ -104,8 +115,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
* unknown.
*/
if (test_sta_flags(sta, WLAN_STA_PS_STA) &&
skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
skb_queue_tail(&sta->tx_filtered, skb);
skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) {
skb_queue_tail(&sta->tx_filtered[ac], skb);
sta_info_recalc_tim(sta);
if (!timer_pending(&local->sta_cleanup))
@ -127,7 +138,7 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
if (net_ratelimit())
wiphy_debug(local->hw.wiphy,
"dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
skb_queue_len(&sta->tx_filtered),
skb_queue_len(&sta->tx_filtered[ac]),
!!test_sta_flags(sta, WLAN_STA_PS_STA), jiffies);
#endif
dev_kfree_skb(skb);